A weeaboo is someone who commonly lives in the West, and outright denies any sort of Western heritage in the defense that Japan is the supreme nation of the world. They often do obsess over several anime series, however not everyone who watches anime is a weeaboo. If someone is still happy with living in the West (I don't like living in America, but I'd still like to stay in the Western world, possibly in Canada or Sweden), then they aren't a weeaboo. Simply put, watching anime doesn't make you a fat loser, being a fat loser makes you a fat loser.